[go: up one dir, main page]

JPS5674274A - Lighting device for slit exposure - Google Patents

Lighting device for slit exposure

Info

Publication number
JPS5674274A
JPS5674274A JP14222079A JP14222079A JPS5674274A JP S5674274 A JPS5674274 A JP S5674274A JP 14222079 A JP14222079 A JP 14222079A JP 14222079 A JP14222079 A JP 14222079A JP S5674274 A JPS5674274 A JP S5674274A
Authority
JP
Japan
Prior art keywords
reflected
focus
slit
reflecting mirror
light source
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP14222079A
Other languages
Japanese (ja)
Inventor
Masayoshi Miyashita
Hideo Nishiyama
Teruaki Shigeta
Kazutaka Koyama
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP14222079A priority Critical patent/JPS5674274A/en
Publication of JPS5674274A publication Critical patent/JPS5674274A/en
Pending legal-status Critical Current

Links

Landscapes

  • Exposure Or Original Feeding In Electrophotography (AREA)
  • Light Sources And Details Of Projection-Printing Devices (AREA)

Abstract

PURPOSE: To obtain a slit lighting device with high lighting efficiency and the stable illuminance distribution of always constant exposure by forming an optical system by means of a main reflecting mirror provided with the reflection surfaces such as predetermined composite ellipses and an auxiliary reflecting mirror.
CONSTITUTION: A main reflecting mirror 7 is provided with the reflection surface formed by composite elliptical faces such as paraboloid 7c of a focus F1, elliptical faces 7a, 7b... having the 2nd focuses F5, F6... with the focus F1 as the 1st focus. Part of the light source light from the light source 1 installed to the focus F1 is reflected by the face 7c. The remainder of the light source light is reflected by the faces 7a, 7b... etc., after which it is reflected by an auxiliary reflecting mirror 6 to plural reflected rays. These reflected rays are combined to a luminous flux of broad width in a uniform light intensity distribution. This luminous flux irradiates the slit P. With this constitution, the lighting efficiency is made high and the slit light assumes a stable illuminance distribution of constant exposure without effected by some deviations in the light source position and exposure slit position.
COPYRIGHT: (C)1981,JPO&Japio
JP14222079A 1979-11-02 1979-11-02 Lighting device for slit exposure Pending JPS5674274A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14222079A JPS5674274A (en) 1979-11-02 1979-11-02 Lighting device for slit exposure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14222079A JPS5674274A (en) 1979-11-02 1979-11-02 Lighting device for slit exposure

Publications (1)

Publication Number Publication Date
JPS5674274A true JPS5674274A (en) 1981-06-19

Family

ID=15310198

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14222079A Pending JPS5674274A (en) 1979-11-02 1979-11-02 Lighting device for slit exposure

Country Status (1)

Country Link
JP (1) JPS5674274A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59106135U (en) * 1983-01-06 1984-07-17 富士写真光機株式会社 Line lighting device
US4851975A (en) * 1987-09-29 1989-07-25 Minolta Camera Kabushiki Kaisha Illumination device
JPH0286261U (en) * 1988-12-22 1990-07-09

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59106135U (en) * 1983-01-06 1984-07-17 富士写真光機株式会社 Line lighting device
US4851975A (en) * 1987-09-29 1989-07-25 Minolta Camera Kabushiki Kaisha Illumination device
JPH0286261U (en) * 1988-12-22 1990-07-09

Similar Documents

Publication Publication Date Title
JP2655465B2 (en) Reflection type homogenizer and reflection type illumination optical device
ATE342520T1 (en) ILLUSTRATION OF LIGHT FROM A SMALL LIGHT SOURCE OF A PROJECTION SYSTEM WITH PARABOLIC REFLECTORS
JPS5681813A (en) Mask lighting optical system
JPS5545074A (en) Hologram lens
JPS5674274A (en) Lighting device for slit exposure
JPS56106257A (en) Illumination apparatus of copying machine
JPS5442129A (en) Lighting device for copier
JPS5624371A (en) Slit exposure type lighting device
JPS55105204A (en) Optical path branching filter
JPS64913A (en) Luminator
JPS5692553A (en) Lighting device
JPS5726841A (en) Scanning illumination device
JPS552253A (en) Exposure method of photoreceptor and apparatus thereof
JPS56119111A (en) Collimator
JPS557714A (en) Luminous flux corrector
JPS5494325A (en) Lighting device
JPS5646263A (en) Original lighting device of electronic copying machine
JPS5572806A (en) Contour display unit
JPS54100174A (en) Reflection plate for lighting apparatus
JPH0513312B2 (en)
JPS56154760A (en) Illuminator of copying machine
JPS5532090A (en) Light attenuator
JPS5565941A (en) Lighting device for slit exposure type copying machine
JPS55126263A (en) Variable magnification optical device
JPS5223340A (en) Magnifying projection means